Q. I've been syncing my Symbian smartphone happily to my Mac for over a month, yet all of a sudden the iSync has started failing, with error: “[Nokia N97 mini] Connection to the phone failed. Please make sure that your phone is turned on.” I'm tech savvy and have tried power cycling both phone and Mac. What's next?

Q. I'm generally quite happy with Ovi Maps on my new Nokia N97 mini – I downloaded the new v3.0 and it's proved superbly reliable. But I'm not happy with all the distances being in metric. I know Finland wouldn't know their inches from their miles, but is there any hope?

Q. In an attempt to work out why my microSD card was full, I connected my smartphone to my Mac in 'Disk Transfer' mode. Aha - I found a load (Gigabytes!) of old music files from when I used to sync my phone with a Windows PC. I then deleted the root directory containing all these files and.... it seems that the disk is still full! Obviously, there's something going wrong in the counting, but what, and how do I fix it?